Keystone Medium Mainspring Lubricant withstands pressures of over 300,000 PSI. The outstanding film strength allows mainsprings to release with smooth and even power for years without binding, rus...
Description: Keystone Medium Mainspring Lubricant withstands pressures of over 300,000 PSI. The outstanding film strength allows mainsprings to release with smooth and even power for years without binding,...More Details »